pls fix

[Artistic-Waffle]

[Server thread/CRITICAL]: Could not pass event 'pocketmine\event\entity\EntityDamageEvent' to 'TeaSpoon v1.0.0': Trying to get property 'usingElytra' of non-object on CortexPE\EventListener
[04:05:15] [Server thread/CRITICAL]: ErrorException: "Trying to get property 'usingElytra' of non-object" (EXCEPTION) in "TeaSpoon_dev-60.phar/src/CortexPE/EventListener" at line 215
[04:05:15] [Server thread/DEBUG]: #0 TeaSpoon_dev-60.phar/src/CortexPE/EventListener(215): pocketmine\error_handler(integer 8, string Trying to get property 'usingElytra' of non-object, string phar:///home/marcus/help/plugins/TeaSpoon_dev-60.phar/src/CortexPE/EventListener.php, integer 215, array Array())
[04:05:15] [Server thread/DEBUG]: #1 src/pocketmine/plugin/MethodEventExecutor(38): CortexPE\EventListener->onDamage(pocketmine\event\entity\EntityDamageEvent object)
[04:05:15] [Server thread/DEBUG]: #2 src/pocketmine/plugin/RegisteredListener(98): pocketmine\plugin\MethodEventExecutor->execute(CortexPE\EventListener object, pocketmine\event\entity\EntityDamageEvent object)
[04:05:15] [Server thread/DEBUG]: #3 src/pocketmine/plugin/PluginManager(721): pocketmine\plugin\RegisteredListener->callEvent(pocketmine\event\entity\EntityDamageEvent object)
[04:05:15] [Server thread/DEBUG]: #4 src/pocketmine/entity/Entity(848): pocketmine\plugin\PluginManager->callEvent(pocketmine\event\entity\EntityDamageEvent object)
[04:05:15] [Server thread/DEBUG]: #5 src/pocketmine/entity/Living(431): pocketmine\entity\Entity->attack(pocketmine\event\entity\EntityDamageEvent object)
[04:05:15] [Server thread/DEBUG]: #6 src/pocketmine/Player(3600): pocketmine\entity\Living->attack(pocketmine\event\entity\EntityDamageEvent object)
[04:05:15] [Server thread/DEBUG]: #7 src/pocketmine/entity/Living(365): pocketmine\Player->attack(pocketmine\event\entity\EntityDamageEvent object)
[04:05:15] [Server thread/DEBUG]: #8 src/pocketmine/entity/Entity(1373): pocketmine\entity\Living->fall(double 3.1272)
[04:05:15] [Server thread/DEBUG]: #9 src/pocketmine/entity/Entity(1597): pocketmine\entity\Entity->updateFallState(double 0.33749999999999, boolean 1)
[04:05:15] [Server thread/DEBUG]: #10 src/pocketmine/Player(1503): pocketmine\entity\Entity->move(double 0.4246, double 0.33749999999999, double 0.075600000000009)
[04:05:15] [Server thread/DEBUG]: #11 src/pocketmine/Player(1663): pocketmine\Player->processMovement(integer 1)
[04:05:15] [Server thread/DEBUG]: #12 src/pocketmine/level/Level(751): pocketmine\Player->onUpdate(integer 17981)
[04:05:15] [Server thread/DEBUG]: #13 src/pocketmine/Server(2377): pocketmine\level\Level->doTick(integer 17981)
[04:05:15] [Server thread/DEBUG]: #14 src/pocketmine/Server(2534): pocketmine\Server->checkTickUpdates(integer 17981, double 1514088315.8247)
[04:05:15] [Server thread/DEBUG]: #15 src/pocketmine/Server(2274): pocketmine\Server->tick()
[04:05:15] [Server thread/DEBUG]: #16 src/pocketmine/Server(2149): pocketmine\Server->tickProcessor()
[04:05:15] [Server thread/DEBUG]: #17 src/pocketmine/Server(1737): pocketmine\Server->start()
[04:05:15] [Server thread/DEBUG]: #18 src/pocketmine/PocketMine(554): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string /home/marcus/help/, string /home/marcus/help/plugins/)
[04:05:15] [Server thread/DEBUG]: #19 /home/marcus/help/PocketMine-MP.phar(1): require(string phar:///home/marcus/help/PocketMine-MP.phar/src/pocketmine/PocketMine.php)
[04:05:34] [Server thread/CRITICAL]: Could not pass event 'pocketmine\event\entity\EntityDamageEvent' to 'TeaSpoon v1.0.0': Trying to get property 'usingElytra' of non-object on CortexPE\EventListener
[04:05:34] [Server thread/CRITICAL]: ErrorException: "Trying to get property 'usingElytra' of non-object" (EXCEPTION) in "TeaSpoon_dev-60.phar/src/CortexPE/EventListener" at line 215